Nancy often reminded Clementine of a quote by Gore Vidal which reflects the complexity of friendship and envy. The quote suggests that one might feel a sense of loss or jealousy when a friend achieves success, which adds a layer of depth to their relationship. This sentiment resonates with the theme of competition and personal feelings within friendships.

In Liane Moriarty's book "Truly Madly Guilty," the dynamics of such friendships are explored, highlighting how individual successes can impact relationships. The characters navigate their emotions, revealing that friendships can be both a source of joy and a trigger for insecurities, as demonstrated through Clementine's reflections on Nancy's accomplishments.